Explanation

Original price = 4000

Discounted price = 2800

Discount = 4000 - 2800 = 1200

Discount percentage = (Discount/Original price) × 100

= (1200/4000) × 100

= 30%

Last verified on 10-02-2026

Explanation

Ali ate 1 2/5 = 7/5 pizzas. Hamna ate same quantity of burgers. 

Assuming size difference isn't given, Hamna ate same numerical quantity.

Last verified on 10-02-2026

Explanation

De Morgan's first law states that the complement of the union of two sets A and B is equal to the intersection of their complements.

The correct representation is:

(AUB)' = A' ∩ B'

Last verified on 10-02-2026

Explanation

Arithmetic Progression (AP): A sequence where each term differs from the previous term by a constant (d).

If d = 0, every term is the same → sequence is constant.

Example: 5, 5, 5, 5, 5 → common difference = 0

Last verified on 10-02-2026

Explanation

nC6 = nC12 => n = 6 + 12 = 18 (since nCr = nCs => n = r + s)

Last verified on 10-02-2026

Explanation

(x+3)/(x+7) = 3/7

7(x+3) = 3(x+7)

7x + 21 = 3x + 21

4x = 0

x = 0

Last verified on 10-02-2026

Explanation

5³/5 = 5² = 25

Last verified on 10-02-2026

Explanation

Multiplicative inverse of a number 'a' is 1/a.

So, multiplicative inverse of √6 is 1/√6.

Last verified on 10-02-2026

Explanation

Square of x is x².

Last verified on 10-02-2026

Explanation

0.75 is a terminating decimal, which can be written as 75/100.

Simplifying 75/100 gives 3/4, making it a rational number.

Last verified on 10-02-2026